Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/9016#discussion_r41802694
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/columnar/ColumnType.scala ---
@@ -34,7 +34,8 @@ import org.apache.spark.unsafe.types.UTF8String
*
* @tparam JvmType Underlying Java type to represent the elements.
*/
-private[sql] sealed abstract class ColumnType[JvmType] {
+private[sql]
+sealed abstract class ColumnType[@specialized(Boolean, Byte, Short, Int,
Long) JvmType] {
--- End diff --
Haven't checking the JITed code, not sure the generated code will look like.
@rxin Will this work as expected (having specialized class for these
primitive types)?
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